Ryan has spoken out against Trump before, including disavowing his proposed temporary ban on Muslims entering the US

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House Speaker Paul Ryan takes questions from reporters, Tuesday, July 12, 2016, during a news conference following the Republican caucus meeting, on Capitol Hill in Washington.

House Speaker Paul Ryan defended his decision to support Donald Trump, noting that he was still a better choice over Hillary Clinton even though Ryan disagreed with the candidate on many issues, NBC News reported.

"It's a binary choice," Ryan told a skeptical voter at a CNN town hall Tuesday. "It is either Donald Trump or Hillary Clinton — you don't get a third option. It's one or the other and I know where I want to go."

Ryan has spoken out against Trump before, including disavowing his proposed temporary ban on Muslims entering the United States and Trump's attack on a federal judge with "Mexican heritage" presiding over a lawsuit against Trump University.